然后我把里面的js,html,css复制过来，运行不起来，，求解
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no" />
<meta charset="utf-8" />
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<script src="https://unpkg.com/vue-router/dist/vue-router.js"></script>
<style type="text/css">
.us {
display: grid;
grid-template-columns: auto 1fr;
grid-template-rows: auto;
grid-template-areas: "header header" "nav content" "nav helper";
}
h2 {
grid-area: header;
}
.us__nav {
grid-area: nav;
border: 1px dotted;
margin-right: .75rem;
padding: .3rem;
}
.us__content {
grid-area: content;
}
.us__content--helper {
grid-area: helper;
}
</style>
<body>
<div id="app">
<h1>Nested Named Views</h1>
<router-view></router-view>
</div>
<script>
const UserSettingsNav = {
template: `
<div class="us__nav">
<router-link to="/settings/emails">emails</router-link>
<br>
<router-link to="/settings/profile">profile</router-link>
</div>
`
}
const UserSettings = {
template: `
<div class="us">
<h2>User Settings</h2>
<UserSettingsNav/>
<router-view class ="us__content"/>
<router-view name="helper" class="us__content us__content--helper"/>
</div>
`,
components: { UserSettingsNav }
}
const UserEmailsSubscriptions = {
template: `
<div>
<h3>Email Subscriptions</h3>
</div>
`
}
const UserProfile = {
template: `
<div>
<h3>Edit your profile</h3>
</div>
`
}
const UserProfilePreview = {
template: `
<div>
<h3>Preview of your profile</h3>
</div>
`
}
const router = new VueRouter({
mode: 'history',
routes: [
{ path: '/settings',
// You could also have named views at tho top
component: UserSettings,
children: [{
path: 'emails',
component: UserEmailsSubscriptions
}, {
path: 'profile',
components: {
default: UserProfile,
helper: UserProfilePreview
}
}]
}
]
})
router.push('/settings/emails')
new Vue({
router,
el: '#app'
})
</script>
</body>
</html>
运行就是找不到页面，如果把命名路由去了，就是这句router.push('/settings/emails')，，运行起来，就显示这段文字
Nested Named Views
其他的不现实，，求解。谢谢
